Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Thomas, I just tested your scenario on DRBD 8.4.3. It seems fine, connection did not break. While doing the DD, I did change primary / secondary on bob node few times, but the connection never break. The only thing I couldn't run this drbdadm --allow-two-primaries=yes <resource>, it give uknown command. But I do have allow-two-primaries setup in my drbd.conf, not sure that make any different? Regards Louis >________________________________ > From: Thomas Thrainer <thomasth at google.com> >To: Luca Fornasari <luca.fornasari at gmail.com> >Cc: drbd-user at lists.linbit.com >Sent: Friday, May 3, 2013 10:00 AM >Subject: Re: [DRBD-user] Enabling two primaries break connection > > > >Hi, > > >Given the fact that I could reproduce the bug regularly, I'm pretty sure that this is indeed a DRBD bug. Unfortunately I didn't find a bugtracker on the DRBD site. Is there one? If not, what's the official way to report bugs? > > >For the record, here are the steps to reproduce: > * create a device with primary on alice and secondary on bob > * on alice: while true; do dd if=/dev/zero of=/dev/drbd0; done > * on bob: drbdadm --allow-two-primaries=yes <resource>; drbdadm primary <resource> > * you might have to drbdadm secondary <resource> on bob and then repeat the previous step in order to produce the bug > > >Log files are as mentioned in the first mail of the thread. > > >Cheers, >Thomas > > > > > >On Tue, Apr 30, 2013 at 2:25 PM, Thomas Thrainer <thomasth at google.com> wrote: > >Hi Luca, >> >> >>I just reproduced the exact same problem using only drbdadm. I also inspected the output of the -d option, and drbdadm does the exact same thing as Ganeti in this regard. >> >> >>Thanks, >>Thomas >> >> >> >>On Tue, Apr 30, 2013 at 2:18 PM, Thomas Thrainer <thomasth at google.com> wrote: >> >>Hi Luca, >>> >>> >>>I'll try the drbdadm method this as soon as I get to it. Right now I have no machines around which are already configured via drbdadm. >>> >>> >>>Note that I have included both logs (secondary and primary) in my first email. >>> >>> >>>I use DRBD 8.4.2 because 8.4.3 didn't compile against my kernel (3.2.27) and I didn't want to put much work into it. I this bug is known and fixed in 8.4.3, I'll might look into compiling against 3.2.27 again. >>> >>> >>>Cheers, >>>Thomas >>> >>>-- >>> >>>Thomas Thrainer | Software Engineer | thomasth at google.com | >>> >>> >>> >>>Google Germany GmbH >>>Dienerstr. 12 >>>80331 München >>> >>>Registergericht und -nummer: Hamburg, HRB 86891 >>>Sitz der Gesellschaft: Hamburg >>>Geschäftsführer: Graham Law, Katherine Stephens >> >> >> >>-- >> >>Thomas Thrainer | Software Engineer | thomasth at google.com | >> >> >> >>Google Germany GmbH >>Dienerstr. 12 >>80331 München >> >>Registergericht und -nummer: Hamburg, HRB 86891 >>Sitz der Gesellschaft: Hamburg >>Geschäftsführer: Graham Law, Katherine Stephens > > > >-- > >Thomas Thrainer | Software Engineer | thomasth at google.com | > > > >Google Germany GmbH >Dienerstr. 12 >80331 München > >Registergericht und -nummer: Hamburg, HRB 86891 >Sitz der Gesellschaft: Hamburg >Geschäftsführer: Graham Law, Katherine Stephens >_______________________________________________ >drbd-user mailing list >drbd-user at lists.linbit.com >http://lists.linbit.com/mailman/listinfo/drbd-user > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20130503/4704ad9b/attachment.htm>